Offended students took to Twitter to share the photo. African American senior Tia Fowlkes told the Tower Pulse, the school’s newspaper, she wanted to “spread awareness of this racism.”

The school disciplined all four students and suspended two other teens for “threats, intimidation directed towards students who spoke up,” according to the school.

In a letter posted online, schools officials assured parents that the students were reprimanded and informed them of a remediation.

“While the school cannot regulate off campus activities, we will not be silent in the face of racially intolerant language,” the letter reads. “The Student Code of Conduct does task administration with monitoring student behavior that impacts our learning environment, even if that behavior occurs outside of the school day.”

“Today, South administration facilitated a dialogue between several of the students involved as well as the leaders of our Black Awareness Society for Education (BASE) student group. This dialogue created a starting point for our healing process as we move forward,” continued the letter.

BASE criticized the racist actions but said the first meeting left them feeling optimistic about an accepting and unified environment at the school going forward.

BASE members who met with the disciplined students said “they are apologizing willingly.”